摘要
在长期演进系统中,移动负载均衡(MLB)和移动鲁棒性优化(MRO)都通过调整切换相关参数优化各自性能目标,这会引发冲突,降低系统性能。为此,提出一套针对MLB的协调机制,采用移动鲁棒性监测、切换边界标记和参数回调等方法避免两者的冲突。仿真结果表明,该协调机制能够防止MLB对切换参数的不当调节,减少切换次数,避免链路失败等问题。
In Long Term Evaluation(LTE) system,Mobility Load Balancing(MLB) and Mobility Robustness Optimization(MRO) may conflict with each other when they both adjust handover parameters to optimize their respective objects,and consequently system performance degrades.A coordination mechanism embedded in the MLB is proposed to alleviate the impact of conflict problem between MLB and MRO by mobility robustness supervision,handover edge labeling and parameter rollback.Simulation results show that this mechanism can immediately prevent negative handover parameters adjustments by MLB,and decrease the number of mobility problems caused by MLB.
出处
《计算机工程》
CAS
CSCD
2012年第1期37-41,共5页
Computer Engineering
基金
国家科技重大专项基金资助项目"IMT-A新型无线资源管理研究及验证"(2009ZX03003-007-03)
国家科技重大专项基金资助项目"超高速无线局域网无线接口关键技术研究与验证"(2010ZX03005-001-03)
上海市科委基础研究基金资助重大项目"融合网络环境中的异构网络传输技术研究"(10DJ1400302)
东南大学移动通信国家重点实验室开放研究基金资助项目
关键词
长期演进系统
自组织网络
移动负载均衡
移动鲁棒性优化
切换
无线链路失败
Long Term Evaluation(LTE) system
Self-organizing Network(SON)
Mobility Load Balancing(MLB)
Mobility Robustness Optimization(MRO)
handover
Radio Link Failure(RLF)